The Clearance cart contains older, returned books or books with cosmetic blemishes. All product is in usable condition, having no writing or missing parts, and can be used in conjunction with our new product. The items with "Comb Bound" in the description are our older books, which also work with our newer material. Clearance are sold on a first-come first-served basis. All sales in the clearance cart are final, and no returns will be accepted.